Small white flowers bloom on the end of a cherry tree branch near the base of the Washington Monument in Washington, DC.

Is Your Favorite Tree an Invasive Species?

Some superstar trees in the US are actually invasive to their ecosystems. Blossoming cherry trees, for example.
A dead tree in a forest

What Happens to a Tree When It Dies?

Decomposing trees on the forest floor become "dead wood"—a part of ecosystems that researchers are only beginning to understand.
Lodge-pole pines c. 1857

Good News for the Lodgepole Pine!

The long-lived species' survivor genes are dispersed from the Yukon to southern California, meaning that it has a good chance of weathering climate change.
Orange Buddish Monks Robe tied around a tree.

Why Some Buddhist Monks Ordain Trees

Buddhist monks in Thailand began tying trees with their traditional colored robes in the 1980s, as threats to ecology increased.
The Dragon tree (left) and Dragon tree fruit (right)

Plant of the Month: The Dragon Tree

Dragon's blood is all the rage now, but where does the scarlet resin come from?
A massive American Elm tree sits backlit by the rising sun in Overlook Park in northern Portland, Oregon.

Why Learning the Names of Trees Is Good for You

Getting to know trees can lead to new ways of looking at the world.
A large tree with moss-covered roots.

Ten Stories about Trees for Arbor Day

They talk to each other via underground networks, grow shy, migrate across the Earth's surface, and reverse some of the damage caused by climate change.
Mount Saint Helens, United States

Could a Trillion Trees Really Save the Planet?

Scientists think that planting trees could reverse climate change, but planting trees isn't as simple as it sounds.
Callery Pear Trees in bloom

When a Cultivated Tree Goes Rogue

The Callery pear was meant to help prevent fire blight from destroying the commercial pear industry. Then it became invasive.
Crown shyness

The Mysteries of Crown Shyness

In some forests, trees grow in a manner that keeps their branches from touching one another. Despite decades of study, scientists aren't exactly sure why.